Men may be treated for serious illnesses but, "Do they have the balls for it?

Men may have the organ needed to treat them with such illnesses as Alzheimer's and diabetes for scientist have learned that testicles may be "a source of stem cells to help them fight these diseases." The main question is, do men actually have the balls

The good news for men is that US scientists may have discovered a way in which stem cells taken from a male's testicles could combat such diseases as Alzheimer's and diabetes.

The bad news is that extracting these stem cells can be extremely painful therefore chances are that most men would not be willing or have the balls to suffer through this procedure.

Now, I'm all in favour of research conducted in treating these serious illnesses but the one question I would like to have an answer to, is why have these scientist been able to first find a possible treatment for men and not women? Afterall, women may be more likely of having the balls to endure the pain then men do.